CN101232245A - Power supply device and communication apparatus - Google Patents

Power supply device and communication apparatus Download PDF

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Publication number
CN101232245A
CN101232245A CNA2007101604051A CN200710160405A CN101232245A CN 101232245 A CN101232245 A CN 101232245A CN A2007101604051 A CNA2007101604051 A CN A2007101604051A CN 200710160405 A CN200710160405 A CN 200710160405A CN 101232245 A CN101232245 A CN 101232245A
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China
Prior art keywords
power supply
electric power
load
circuit
processing
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CNA2007101604051A
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Chinese (zh)
Inventor
古山义人
三好清司
宫近詠史
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Fujitsu Ltd
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Fujitsu Ltd
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power
    • G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power
    • G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
    • G06F1/3234—Power saving characterised by the action undertaken
    • G06F1/3296—Power saving characterised by the action undertaken by lowering the supply or operating voltage
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/28—Current-supply circuits or arrangements for selection equipment at exchanges
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)
  • Inverter Devices (AREA)

Abstract

The present invention provides power supply device and communication equipment. A power supply device of the present invention includes: a supply section that supplies power to a processing device which processes data and outputs a result of processing the data; a load prediction section that predicts, based on a load of processing executed by the processing device at a time before the present time, a load of processing to be executed by the processing device after the present time; and a power control section that causes the supply section to increase or decrease power supply according to the magnitude of load predicted by the load prediction section.

Description

Electric power supply apparatus and communication equipment
Technical field
The present invention relates to provide the electric power supply apparatus of electric power to processing unit, and the communication equipment of executive communication processing.
Background technology
In routine techniques, each all is provided with the electric power supply apparatus that electric power is provided to the IC that carries out various types of processing etc. such as the electric equipment of communication equipment or server apparatus; And electric power must offer these electric power supply apparatus always with being stabilized.The voltage that particularly outputs to IC etc. need be adjusted to constant level.
Fig. 1 is the schematic diagram that the electric power supply apparatus of electric power is provided to electric equipment.
Electric power supply apparatus 10 shown in Figure 1 is to use the simulation control type electric power supply apparatus such as the analog element of amplifier and comparator, and its adjustment outputs to the voltage of IC etc.
Electric power supply apparatus 10 comprises voltage detecting circuit 11, error amplifier 12, compensating circuit 13, reference oscillator 14, comparator 15, switch element 16 and smoothing filter 17.
At first, voltage detecting circuit 11 detects the current electric power output voltage Vout that outputs to IC etc. from electric power supply apparatus 10.Detected output voltage V out is sent to error amplifier 12.Error amplifier 12 amplifies and exports poor between this output voltage V out and the reference voltage V 0.Compensating circuit 13 is with the value adjustment of the sensitivity that the is suitable for comparator 15 amplification voltage Vg from error amplifier 12 outputs.
Reference oscillator 14 is with the voltage signal Vp of given frequency output sawtooth waveform.Comparator 15 will from the voltage signal Vp of the sawtooth waveform of reference oscillator 14 output with compare by amplification voltage Vg through compensating circuit 13 adjustment, and transmit control signal to switch element 16, wherein when the voltage signal Vp of sawtooth waveform when amplifying voltage Vg, control signal is switched on, otherwise is turned off.
By utilizing the control signal that sends from comparator 15, carry out the conducting/shutoff control of switch element 16, so that adjust the pulse duration of the input voltage vin that is input to electric power supply apparatus 10; Smoothing filter 17 is carried out smoothing processing.Therefore, the output voltage V out that has adjusted magnitude of voltage from electric power supply apparatus 10 to electric equipment output.For example, when being reduced by voltage detecting circuit 11 detected output voltage V out, the output voltage V out and the difference between the reference voltage V 0 that are calculated by error amplifier 12 increase.Therefore as a result, the voltage signal Vp of sawtooth waveform becomes less than this amplification voltage Vg, from " conducting " time lengthening of the control signal of comparator 15 outputs, thereby has increased the pulse duration of input voltage vin.Therefore, output voltage V out rises.
As mentioned above, in electric power supply apparatus 10, carry out control, keep constant so that output to the output voltage of processing unit.
In recent years, along with the miniaturization of the energy-conservation and battery of electric equipment constantly develops, the demand of the low pressure applications of the various elements that constitute electric equipment and IC etc. is constantly increased.Therefore, the electric current that flows into these elements and IC trends towards increasing.In addition, in communication equipment, server apparatus etc., the electric current that flows into the IC of executive communication processing may increase sharp in the mode with the traffic state interlocking of communicating by letter; In the case, the initial low-voltage that is applied to IC may be further reduced, and drops under the minimum voltage that allows the executive communication processing, therefore causes the fault such as signal interruption.
In this respect, the Japan Patent spy opens 9-154275 number and discloses the technology that provides electric power supply apparatus with a kind of, and this electric power supply apparatus has the capacitor that is used for soft start, reduces thus to begin or the rapid variation of electric current when cutting off supply of electric power.When beginning or when cutting off supply of electric power, electric current is changed smoothly, thereby can prevent that internal circuit from being transshipped by the peak current in the start-up course of supply of electric power, or prevents the fault that reduces to cause owing to voltage; Above problem is to have obtained the electric equipment that makes progress at big electric current application at present to propose.
But Japanese Patent Laid discloses in 9-154275 number that the technology of describing can not handle that load in the processing of being carried out by intermittence (as communication process) increases and the electric current that causes sharply changes.
In conventional simulation control type electric power supply apparatus, switching frequency is raised, to improve the response of power supply; Power supply is adjusted to follow the mode jumpy of handling load.But, only utilize these adjustment of switching frequency, be difficult to further improve the response of power supply.
Summary of the invention
The present invention In view of the foregoing makes, and a kind of electric power supply apparatus and communication equipment are provided, and wherein can stably provide electric power, and irrelevant with the processing load.
Electric power supply apparatus according to the present invention comprises:
Power supply part provides electric power to the processing unit of data being handled and exported the result who handles these data;
The load prediction parts, the load of the processing of carrying out based on the time of described processing unit before the current time is predicted the load of the processing that described processing unit is carried out after the current time; And
Power control unit, the load of predicting according to described load prediction parts makes described power supply part increase or reduce supply of electric power.
The load of the processing that will be performed after the prediction current time according to electric power supply apparatus according to the present invention, and increase or reduce supply of electric power according to the load of being predicted.Therefore,, also there is enough electric power to be provided for this processing unit, guarantees stable treated thus even data volume to be processed increases sharply.
Preferably, in electric power supply apparatus according to the present invention, this power supply part provides the electric power with variable voltage, and
This power control unit makes this power supply part increase or reduce supply of electric power by promoting or reduce the voltage of power supply part.
The voltage that reduces to be applied to processing unit can cause handling the fault of failure or processing unit, and this is to flow into processing unit and the heat or the overload that cause cause by too much electric power.But, increase or reduce supply of electric power by promoting or reducing this voltage, can guarantee that processing unit carries out stable treated.
Equally preferably, in electric power supply apparatus according to the present invention, this processing unit is introduced in the communication equipment and is used for the data that this communication equipment is communicated by letter are communicated processing.
Increase because the load of the processing of being carried out by communication equipment depends on the data volume that is transmitted and receives or reduce, thus this communication equipment to adopt electric power supply apparatus of the present invention be desirable.
In addition, communication equipment according to a further aspect in the invention comprises:
Be used for the processing unit of deal with data;
The power supply part of electric power is provided to this processing unit;
The load prediction parts, the load of the processing of carrying out based on the time of this processing unit before the current time is predicted the load of the processing that this processing unit is carried out after the current time; And
Power control unit makes this power supply part increase or reduce supply of electric power according to the load by this load prediction parts prediction.
Even communication data promptly increases, this communication equipment also guarantees reliable communication data processing.
Preferably, in the communication equipment aspect this according to the present invention, this power supply part provides the electric power with variable voltage, and
This power control unit makes this power supply part increase or reduce supply of electric power by promoting or reduce the voltage of this power supply part.
By this lifting or reduce voltage and increase or reduce supply of electric power, can guarantee that processing unit carries out stable treated.
According to the present invention, electric power can offer processing unit with being stabilized, and irrelevant with the processing load, therefore can carry out processing reliably.
Description of drawings
Fig. 1 is the schematic configuration diagram that the electric power supply apparatus of electric power is provided to electric equipment;
Fig. 2 is an external perspective view of having used the communication unit of embodiment of the present invention;
Fig. 3 is the perspective view of holding plate;
Fig. 4 is the schematic diagram of circuit unit;
Fig. 5 is the functional block diagram of three circuit units in a plurality of circuit units shown in Figure 2;
Fig. 6 is the schematic diagram of power supply source, control circuit power and treatment circuit in the signal processing component;
Fig. 7 is the schematic structure view of power supply source, control circuit power and treatment circuit in the signal processing component shown in Figure 6;
Fig. 8 is the figure that flows that the data that transmit between control circuit power and the pwm control circuit are described;
Fig. 9 is that explanation provides the concept map of electric power from each of three power supply sources to treatment circuit; And
Figure 10 is the schematic diagram according to the power supply source in the signal processing component of the 3rd execution mode, power control unit and treatment circuit.
Embodiment
The various details execution mode.
Fig. 2 is an external perspective view of having used the communication unit of embodiment of the present invention.
This communication unit 100 is used for by network transmission/reception data, and comprise unit cover 101, unit frame 102, backboard 103 and the space that centered on by these parts in a plurality of circuit units 200 of being comprised, each circuit unit is carried out and is handled.
In the inner side of backboard 103, the various types of connectors (not shown) that are used to transmit data and electric power have been arranged.The connector of arranging in each of these connectors and a plurality of circuit units 200 assembles mutually, so that described a plurality of circuit unit 200 is connected to each other.
These a plurality of circuit units 200 are used for the communication data that receives by network is one after the other handled; In response to the processing execution of previous stage circuit unit 200, the processing execution in the beginning back one-level circuit unit 200.Each circuit unit 200 comprises the substrate 220 (with reference to Fig. 4) that IC etc. is installed on it, and the holding plate 210 (with reference to Fig. 3) that keeps this substrate 220.
Fig. 3 is the perspective view of the holding plate 210 of forming circuit assembly 200.Fig. 4 is the schematic diagram that the circuit unit 200 of substrate 220 has been installed on holding plate 210.
Holding plate 210 comprises: hold assembly 211 is used at the unit frame 102 that holding plate 210 is inserted Fig. 2 and when this unit frame 102 is removed holding plate 210, with grasped holding plate 210; Be used for providing the power connector 212a of electric power to circuit unit 200; Be used to prevent that the warpage of substrate 220 warpages from preventing metal parts 213; And the data connector 212b that is used to transmit and receive various types of data.
Fig. 4 illustrates the schematic diagram of the circuit unit 200 of the substrate of having installed 220 on holding plate 210.Arrange in the substrate 220 be such as IC a plurality of treatment circuits 221, be used for providing the power supply source 223 etc. of electric power to a plurality of treatment circuits 221.When substrate 220 is assembled in the holding plate 210, when making the power connector 212a of holding plate 210 and data connector 212b insert in the substrate 220, substrate 220 is installed on the holding plate 210.In addition, when holding plate 210 was assembled in the unit frame 102 shown in Figure 2 and is connected to the connector of backboard 103, these a plurality of circuit units 200 were connected to each other.
Fig. 5 is three circuit unit 200_1,200_2 in a plurality of circuit units 200 shown in Figure 2 and the functional block diagram of 200_3.
To describe each each element that constitutes among three circuit unit 200_1,200_2 and the 200_3 below, and use suffix to be marked between them simultaneously and distinguish.
Fig. 5 illustrates the optical interface assembly 200_1 of reception via the optical data of network transmission; To change the Electrical Interface Assemblies 200_2 of numerical data by the optical data that optical interface assembly 200_1 receives into; And to using the signal processing component 200_3 that types of signals is handled by the numerical data of Electrical Interface Assemblies 200_2 conversion acquisition.According to present embodiment, at first, electric power is provided for whole communication unit 100 shown in Figure 2, and these electric power are given each power supply source 223 of a plurality of circuit units 200 then, after this provides electric power from the treatment circuit 221 of power supply source 223 to each circuit unit 200.
Electrical Interface Assemblies 200_2 comprises that detection flows into the current detection circuit 225_2 of the current value of treatment circuit 221_2 during processing execution.Signal processing component 200_3 comprises and obtains current value that is detected by the current detection circuit 225_2 of Electrical Interface Assemblies 200_2 and the power control unit 224_3 that adjusts the electric power of power supply source 223_3 according to the current value that obtains.The treatment circuit 221_2 of Electrical Interface Assemblies 200_2 is corresponding to the example of first processing unit according to the present invention and first processing unit; The treatment circuit 221_3 of signal processing component 200_3 is corresponding to the example of second processing unit according to the present invention and second processing unit; The current detection circuit 225_2 of Electrical Interface Assemblies 200_2 is corresponding to the example according to load detection unit of the present invention; The power supply source 223_3 of signal processing component 200_3 is corresponding to the example according to power supply part of the present invention; And power control unit 224_3 is corresponding to the example according to power control unit of the present invention.
Fig. 6 is the figure of flow process that is used for illustrating the supply of electric power of signal processing component 200_3.
As shown in Figure 6, signal processing component 200_3 comprises a plurality of treatment circuit 221A, 221B, 221C, 221D and 221E.A plurality of power supply source 223A, 223B, 223C, 223D and 223E are connected to treatment circuit 221A, 221B, 221C, 221D and 221E respectively, therefore form a plurality of electric power group A, B, C, D and E.With reference to Fig. 6, the identical suffix letter symbolic representation in the Reference numeral belongs to identical electric power group.
When the beginning supply of electric power or in other moment, electric power offers a plurality of treatment circuit 221A, 221B, 221C, 221D and 221E together simultaneously, so that these treatment circuits 221A, 221B, 221C, 221D and 221E are during by the while conducting, the voltage that is applied to each treatment circuit 221A, 221B, 221C, 221D and 221E can promptly reduce, so that do not provide conducting this circuit required voltage, or electric current may flow into treatment circuit 221A, 221B, 221C, 221D and 221E greatly, thereby cause their faults.In the signal processing component 200_3 according to present embodiment, power control unit 224_3 adjusts the timing of conducting treatment circuit 221A, 221B, 221C, 221D and 221E.
At first, when beginning that communication unit shown in Figure 2 100 carried out supply of electric power, this power supply is given each circuit unit 200.In signal processing component 200_3 shown in Figure 6, at first power control unit 224_3 sends power on command to the power supply source 223A that belongs to electric power group A, and power supply source 223A provides electric power to the treatment circuit 221A of electric power group A.As a result, treatment circuit 221A is switched on.
Similarly, belong to the treatment circuit 221B, the treatment circuit 221C that belongs to electric power group C, the treatment circuit 221E that belongs to the treatment circuit 221D of electric power group D and belong to electric power group E of electric power group B by conducting one after the other.
In this way, because electric power is to be offered a plurality of treatment circuit 221A, 221B, 221C, 221D and 221E by this mode that changes by the time, so that each treatment circuit 221A, 221B, 221C, 221D and 221E are in different timing conductings, and the trouble that is caused by the rapid increase of handling load can be reduced thus.
In addition, when arranging a plurality of power supply source around a treatment circuit, as shown in Figure 6, the distance between treatment circuit and the power supply source is shortened, and allows more effective supply of electric power.In addition, owing to use a plurality of power supply sources, the electric power scale of each power supply source (power scale) can be reduced, and allows to dwindle the coil that the electric power that provides from this power supply source is provided smoothly and the size of capacitor.
In communication equipment, the deal with data amount increases off and on usually or reduces.Therefore, not only in the conducting communication equipment, and when communication data increases sharp, big electric current may flow into treatment circuit, thereby causes big voltage drop, so that its processing can not be performed.
In communication unit 100 according to present embodiment, predict the load of the processing of carrying out by each treatment circuit 221A, 221B, 221C, 221D and 221E in advance, and, adjust the electric power that offers each treatment circuit 221A, 221B, 221C, 221D and 221E according to this load.To describe the method for adjusting supply of electric power below in detail.
Four treatment circuit 221B, 221C, 221D and 221E constituting among five treatment circuit 221A, 221B, 221C, 221D and the 221E of signal processing component 200_3 shown in Figure 6 are used for the communication data that previous stage Electrical Interface Assemblies 200_2 sends is carried out various types of signal processing; And when amount of communication data increased, the load of the processing of being carried out by each treatment circuit 221B, 221C, 221D and 221E increased.Remaining treatment circuit 221A is used for the communication data that previous stage Electrical Interface Assemblies 200_2 sends is carried out virus checking; The load of this processing depends on whether communication data has additional followed file and changes, rather than depends on amount of communication data.
At first, will describe the method for adjusting the electric power that offers four treatment circuit 221B, 221C, 221D and 221E below, in these four treatment circuits, the load of processing depends on amount of communication data significantly.
Here, being provided with the treatment circuit 221B of three power supply source 223B will be as the representative of four treatment circuit 221B, 221C, 221D and 221E and be described.
Fig. 7 is treatment circuit 221B, is used for providing the power supply source 223B of electric power and the schematic diagram of power control unit 224_3 to treatment circuit 221B.
It should be noted that,, in Fig. 7, only illustrate a power supply source 223B, so that simplified illustration although in fact treatment circuit 221B is provided with three power supply source 223B.
As shown in Figure 7, power control unit 224_3 comprises AD (analog to digital) transducer 311, digital filter 312, pwm control circuit 313, control circuit power 314 and pulse oscillator 315; Power supply source 223B comprises switch element 321 and smoothing filter 322.
When adjustment offers the electric power of treatment circuit 221B, as the conventional simulation electric power supply apparatus, use feedback processing basically, adjust the electric power that the time afterwards current time provides based on the electric power that the time before the current time provides.
At first AD converter 311 detects the voltage that the time of power supply source 223B before the current time applies to treatment circuit 221B, should detected voltage transition be digital signal, and sends this digital signal to digital filter 312.Digital filter 312 calculates the difference between detected voltages and the default reference voltage, and average this difference, to produce error signal.The error signal of this generation is sent to pwm control circuit 313.
Pwm control circuit 313 is based on the pulse signal that is produced by pulse oscillator 315 with from the error signal of digital filter 312, produce control signal, its pulse duration depends on the controlling value from power control circuit 314, and sends the control signal of this generation to switch element 321.Hereinafter will describe the processing of carrying out in pwm control circuit 313 and the power control circuit 314 in detail.
Therefore switch element 321 adjusts the pulse duration of input voltage according to carry out conducting/shutoff control from the control signal of pwm control circuit 313.In addition, the voltage with the adjustment afterpulse width through adjusting so that smoothly be applied to the voltage of treatment circuit 221B, and offers treatment circuit 221B with electric power through smoothing filter 322.Hereinafter will describe the electric power that will offer treatment circuit 221B in detail.
For example, when the voltage that is applied to treatment circuit 221B reduced, the error signal value that is produced by digital filter 312 increased, so power control circuit 314 produces the more control signal of broad pulse width.As a result, " conducting " time lengthening of switch element 321, the voltage that therefore is applied to treatment circuit 221B rises.As mentioned above, offer the electric power of treatment circuit 221B by the FEEDBACK CONTROL adjustment.
In addition, according to present embodiment, in each scheduled time, the current value that flows into the treatment circuit 221_2 of previous stage Electrical Interface Assemblies 200_2 sends to control circuit power 314 from Electrical Interface Assemblies 200_2.Usually, along with the amount of communication data that will handle increases, the load of processing increases, and therefore bigger electric current flows in the treatment circuit.Be sent out owing to flow into the current value of previous stage Electrical Interface Assemblies 200_2, the processing that will carry out in therefore can prediction processing circuit 221B is loaded.
When current value was sent to Electrical Interface Assemblies 200_2, power control circuit 314 transmitted control signal.When the current value that obtains from Electrical Interface Assemblies 200_2 is big, power control circuit 314 makes AD converter 311 that its detection voltage is reduced largely, make digital filter 312 use less reference voltage, and make pwm control circuit 313 increase the pulse duration of control signal.As a result, be applied to the voltage rising of treatment circuit 221B from power supply source 223B.
In this way, according to present embodiment, based on the electric power that the time before the current time provides, adjust the electric power (FEEDBACK CONTROL) that the time afterwards current time provides, and simultaneously according to the processing load adjustment electric power of carrying out by previous stage Electrical Interface Assemblies 200_2 (feedfoward control).Therefore, can stably provide electric power, so that can prevent the fault that the increase by the load in the processing execution causes to treatment circuit.
Even providing to treatment circuit 221B under the situation of enough electric power, do not reach the minimum voltage that allows processing execution if be applied to the voltage of treatment circuit 221B, the fault such as defective communication data so also can take place.In communication unit 100, adjust the electric power that offers treatment circuit by the lifting or the reduction of voltage according to present embodiment; When doping load and will increase, this voltage is raise in advance, and therefore processing execution is possible reliably.
Here, when control circuit power 314 was out of hand, pwm control circuit 313 was not controlled by control circuit power 314, and the voltage that execution will impose on treatment circuit remains on the processing of constant level.
Fig. 8 is the figure that flows of the data that transmit between the structure of explanation control circuit power 314 and pwm control circuit 313 and control circuit power 314 and the pwm control circuit 313.
As shown in Figure 8, in signal processing component 200_3, installation is used to be stored in each scheduled time and sends to the buffer 316 of the control signal (being applied to the voltage of treatment circuit 221) of pwm control circuit 313 from control circuit power 314, and the monitor 317 that is used to monitor the operation exception of control circuit power 314.
Buffer 316 is divided into a plurality of memory block 316a; Storing initial value in advance in the minimum memory block 316a shown in the foot of Fig. 8.In buffer 316, begin among each memory block 316a, to store data from minimum memory block; When reaching the memory block 316a that goes up most, the data of storing from the memory block 316a that is adjacent to minimum memory block begin overwriting data.Buffer 316 is corresponding to the example according to memory unit of the present invention.
In addition, pwm control circuit 313 is provided with control signal and writes wherein control storage 313a and the supervisory memory 313b that is write initial value " 1 " by hardware in advance.
When pwm control circuit 313 sends controlling value (being applied to the voltage of treatment circuit 221B), control circuit power 314 writes controlling value among the control storage 313a of pwm control circuit 313, will represent that simultaneously the value " 0 " of operate as normal writes among the supervisory memory 313b.
When control circuit power 314 receives controlling values, pwm control circuit 313 will write in the controlling value write buffer 316 among the control storage 313a.
Monitor 317 monitors the value that writes supervisory memory 313b; When " 0 " value in addition of expression operate as normal was written among the supervisory memory 313b, monitor 317 was to the operation exception of pwm control circuit 313 notice control circuit powers 314.When control circuit power 314 faults, exceptional value is written among the supervisory memory 313b.Because the value of supervisory memory 313b is monitored device 317 and monitors, therefore can detect the unusual of control circuit power 314 reliably.
When being monitored device 317 and having notified the operation exception of control circuit power 314, pwm control circuit 313 sends reset command to control circuit power 314, obtain the controlling value (offering the electric power and the voltage that is applied to treatment circuit 221B of treatment circuit 221B) of the time write buffer 316 before notified operation exception simultaneously, and produce the control signal that pulse duration depends on the controlling value that this obtains.The control signal that produces is sent to switch element shown in Figure 6 321, therefore according to this control signal conducting/cut-off switch element 321.As a result, be applied to treatment circuit 221 with the voltage of the identical value of voltage of time write buffer 316 before notifying operation is unusual.
Finish and " 0 " of representing operate as normal when being write among the supervisory memory 313b once more when resetting of control circuit power 314, monitor 317 has recovered normal to pwm control circuit 313 notice control circuit powers 314.
When notified control circuit power 314 has recovered just often, pwm control circuit 313 produces control signal according to the controlling value that sends from control circuit power 314 once more.
In this way, in the communication unit 100 of present embodiment,, can prevent reliably that also overcurrent from flowing into treatment circuit 221, so treatment circuit 221 is damaged not even own out of hand when control circuit power 314.Therefore, can improve the reliability of the processing execution in the treatment circuit 221.
In addition, in the communication unit 100 of present embodiment, provide electric power from a plurality of power supply sources 223 to treatment circuit 221, thereby the apparent frequency (apparent frequency) that offers the electric power of each treatment circuit 221 is enhanced in the phase shift mode.
Fig. 9 is the concept map that explanation each power supply source from three power supply source 223B offers the electric power of treatment circuit 221B.
When having determined to be applied to the voltage of treatment circuit 221B in control circuit power 314, by three power supply source 223B_1, each power supply source among 223B_2 and the 223B_3 is applied to the voltage of treatment circuit 221B and is adjusted discretely.
Fig. 9 illustrates the pulse signal P that is produced by pulse oscillator 315; Each power supply source from power supply source 223B_1,223B2 and 223B_3 offers electric power V1, V2 and the V3 of treatment circuit 221B; And the combination of power V of electric power V1, V2 and V3.
Control circuit power 314 makes power supply source 223B_1,223B_2 and 223B_3 provide electric power V1, V2 and V3 respectively in the phase shift mode.As a result, the combination of power V of higher frequency is provided for treatment circuit 221B, therefore can reduce pulsation.
In this way, a plurality of power supply sources are connected to a treatment circuit, and provide electric power in the phase shift mode from these a plurality of power supply sources, therefore can easily improve the switching frequency of electric power.
The method of adjusting the electric power that offers four treatment circuit 221B, 221C, 221D and 221E (wherein handle load and depend on amount of communication data) has been described above.To describe the method for adjusting the electric power offer treatment circuit 221A now, in treatment circuit 221A, whether communication data has subsidiary file changes according to (comparing with amount of communication data) more to handle load.
In this treatment circuit 221A, as other four treatment circuit 221B, 221C, 221D and 221E, basically the electric power that provides based on the time before the current time is adjusted the electric power (FEEDBACK CONTROL) that the time afterwards current time will provide, in addition, power control value based on the time before the current time, the load of the processing that the time after the prediction current time will carry out is so that adjust power supply (feedfoward control).
Figure 10 is the schematic diagram of power supply source 223A, power control unit 224_3 and treatment circuit 221A.
In treatment circuit 221A shown in Figure 10, different with treatment circuit 221B shown in Figure 7, previous stage Electrical Interface Assemblies 200_2 does not send current value to power control unit 224_3; Replace and arrange the current value testing circuit 410 that detects the current value that flows into treatment circuit 221A.
When adjustment offered the electric power of treatment circuit 221A, at first, current value testing circuit 410 detected the electric current of current inflow treatment circuit 221A and should send to control circuit power 314 by detected current value.
Control circuit power 314 flows into the current value of treatment circuit 221A based on the time before the current time, the time of prediction after the current time flows into the current value of treatment circuit 221A, so that according to the current value that dopes, decision will be applied to the magnitude of voltage of treatment circuit 221A.In fact, its variation of analyzing current pattern be progressively or rapidly.When the electric current among the treatment circuit 221A changes when rapid, its prediction is big by treatment circuit 221A when the data volume of pre-treatment, so the load of processing execution is big.In the case, in treatment circuit 221A, may continue to take place voltage drop, determine that therefore big voltage will be applied to treatment circuit 221A.
As the method that the electric current based on the time after current mobile current forecasting current time flows, can use regression analysis by the follow-up numerical value of the forecasting of relevance between a plurality of numerical value etc.Regression analysis is the numerical value method of estimation that has been widely used at present, has omitted detailed description thereof thus in this manual.
Control circuit power 314 is based on the determined control of control magnitude of voltage AD converter 311, digital filter 312 and pwm control circuit 313.As a result, determined control magnitude of voltage is applied to treatment circuit 221, thereby provides electric power according to the load of this processing.
When the load of the processing of the time after the load prediction current time that can not handle based on prime, judge based on the load of processing circuit processes of oneself, can accurately adjust the voltage that is applied to treatment circuit.
Described the current value that wherein in the processing execution process, flows into treatment circuit above and be detected as the example of the load of processing execution, but can detect the load of a large amount of deal with data as processing execution according to load detection unit of the present invention.
In addition, described above wherein by promoting or reduce the electric power that the voltage adjustment that is applied to treatment circuit offers treatment circuit, but can control the electric power that offers treatment circuit by the current value that adjustment offers treatment circuit according to power control unit of the present invention.
Simultaneously, described above wherein when in power control unit, operation exception taking place, the identical electric power of electric power of time before time when detected with operation exception is provided for treatment circuit, but when in power control unit, operation exception taking place, can provide predetermined electric power to arrive according to power supply part of the present invention and handle circuit.

Claims (5)

1. electric power supply apparatus, described electric power supply apparatus comprises:
Power supply part, it provides electric power to the processing unit of data being handled and exported the result of these data;
The load prediction parts, the load of the processing of carrying out based on the time of described processing unit before the current time is predicted the load of the processing that described processing unit is carried out after the current time; And
Power control unit makes described power supply part increase or reduce supply of electric power according to the load by described load prediction parts prediction.
2. electric power supply apparatus according to claim 1, wherein said power supply part provides the electric power with variable voltage, and
Described power control unit makes described power supply part increase or reduce supply of electric power by the voltage that promotes or reduce described power supply part.
3. electric power supply apparatus according to claim 1, wherein said processing unit are merged in the communication equipment and are used for the data that described communication equipment is communicated by letter are communicated processing.
4. communication equipment, described communication equipment comprises:
Be used for processing unit that data are handled;
The power supply part of electric power is provided to described processing unit;
The load prediction parts, the load of the processing of carrying out based on the time of described processing unit before the current time predicts that the processing that described processing unit is carried out loads the current time after; And
Power control unit according to the load of described load prediction parts prediction, makes described power supply part increase or reduce supply of electric power.
5. communication equipment according to claim 4, wherein this power supply part provides the power supply with variable voltage, and
This power control unit makes this power supply part increase or reduce supply of electric power by promoting or reduce the voltage of described power supply part.
CNA2007101604051A 2007-01-26 2007-12-19 Power supply device and communication apparatus Pending CN101232245A (en)

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